Magnetic lift for electrodes in electric oscillators.



A. H. COHEN.

MAGNETIC LIFT FOR ELECTRODES IN ELECTRIC OSCILLATORS.

APPLICATION FILED APR. 29, 1913.

1,142,496. PatentedJune 8, 1915.

2 SHEETSSHEET l.

A. H. COHEN.

MAGNETIC LIFT FOR ELECTRODES IN ELECTRIC OSCILLATORS.

APPLICATION FILED APR. 29, 1913.

1. ,142,496. Patented June 8, 1915 2 SH EETSSHEET 2.

fix/M ALFRED H. COHEN, OF FRUITV'ALE, CALIFORNIA.

MAGNETIC LIFT FOB ELECTRODES IN ELECTRIC OSCILLATOBS.

Specification of Letters Patent. Patented June 8, 1915.

Application aim April 29, 1913. 4 Serial No. 764,857.

To all whom it mag} concern:

Be it known that I, Armani) H. Comm, a

citizen of the United States, residing at Fruitvale, in the county ofAlameda and State of California, have invented new and 'usefulImprovements in Magnetic Lift for Electrodes in Electric Oscillators, ofwhich the following is a specification.

This invention relates to an apparatus for automatically lifting andseparating the electrodes in an electric oscillator by means ofelectromagnetism.

The object of this invention is to provide an electric, automaticmechanism for the purpose of simultaneously lifting a plurals,

ity of electrodes in an oscillating circuit,

and also for the purpose of adjusting the spacing between the electrodeswhere several electric oscillators are installed in a circuit. Theinvention consists of the parts and the construction and combination ofparts as.

hereinafter more fully described arid claimed, having reference to theaccompanying drawings, in which-.

Figure 1 is a side elevation in section showing the application of theinvention. Fig. 2 is a front view, partly in section, and a diagram'showing the position of the mechanism with relation to the severalapparatus used in wireless transmission.

In the operation of anumber of high frequency oscillators it has beenfound that in order to produce uniform persistent undamped oscillationsof high frequency, force andeffe'ct-it was absolutely necessary that theelectrodes in each oscillator shouldbe provided with separateorindependent adjustments for the'purpose of adjusting the space betweenthe electrodes in each separate oscillator. This is of great importanceas it is otherwise practically impossible to produce synchronism ofoscillation between the several oscillators in a circuit. Theelimination of such independent adjustment between the electrodes willgenerally produce irregular oscillations which become quickly dampedwith a consequent loss of efficiency, and without an independentadjustment it can be seen by the eye that allthe oscillators are notWorking alike; e. the sparking between the electrodes in each oscillatoris different, and this can only be remedied by an independentadjustment, as it is found by observation and practice that eachoscillator requires a different distance between the electrodes.

Referring to the drawings: A and B indlcate the containers of a pair ofsubmerged oscillators connected in'series, and C and C lndicate a pairof stationary rectangularshaped, vertically disposed supporting framesadapted to be secured to the edges of the containers by any suitablemeans, or

as here shown, by a pair of downwardly extending clamps 2 and 2 andscrews 3.

Centrally and vertically mounted within the containers A and B is a pairof stationary electrodes 4 and 5 and a pair of movable, adjustableelectrodes 6 and 7. The

' electrodes 6 and 7 are secured on the lower ends of a pair ofdownwardly extending square-shaped rods 8 and 9, slidably mounted in thesupporting frames C and C, while the stationary electrodes 4 and 5 areshown as consisting of hollow metal cylinders supported on the outerends of a pair of tubes 10 and 11 forming the terminals of a'pair ofcoolingcoil frames 12 and 12, which. in turnlare secured to the clamps2.

As before stated, the object of this inven- 'tion is to provideanautomatic lifting mechanism, whereby several electrodes may be lifted inunison and whereby the spacing between the electrodes may beindependently adjusted. This is accomplished by the following mechanism:Slidably mounted within the main supporting frames C and C is a pair ofsecondary sliding frames 13 and 13, in which are mounted a pair ofclutching magnets 14 and 14, the cores 15 and 15 of which aresufficiently elongated to project through the frames 13 and 13 and slots16, formed in that portion of the main supporting frames C and C inwhich the rods 8 and 9 are slidably mounted, to bring the cores intocontact with the rods.

Adjustably secured in the upper portions of the supporting frames is apair of lifting magnets 17 and 18, and suitably secured on the topportions of the slide frames 13 and 13' is a pair'of armature plates 19and 19, which are so positioned as to be attracted by the cores of thelifting magnets ture plates 19 and 19 and lift the frames 13 and 13',together with the rods'S- and 9 secured. by the clutching I inagnets-"land 1a; the lift or spacing betweenfthefseveral the masses The apparatushere shown is simple and compact in construction and may be easilyremoved as a vunit 'at any time by releasing clamping screws. Thematerials and electrodes being independently l-controlledgy'finish oftheseveralparts of the mechanism by the adjusting screws 20 or 20 Itthusbecomes possible toadjust the sp" b e-,.; tween the electrodes, aftervtheiosclllatmg' circuit has been closed, by raisingor lower-A This wouldthus destroy the adjustment previously secured by adjusting the lift ofthe lifting magnets, but may be instantly remedied by simply opening thecircuit which will allow thecarbon electrodes to instantly drop intocontact with the stationary electrodes, being released the moment theclutching magnets 14 become deenergized. The

ieo

closing of the circuit through the several magnets will again energizethe clutching magnets with connected cooperating lifting magnets andcause the electrodes to be elevated into the position previously securedby adjustment. It is thus possible, once a desirable and. efficientadjustment has been secured, to maintain this, as it is only necessaryto allow the carbonsto return intocon tact with the stationaryelectrodes and again be elevated to secure such an adjustment..

While I have here shown the lifting and adjusting mechanism as used inconnection with oscillators submerged in imperfectly conducting liquids,I wish it understood that it is also applicable to any of the well-known.types of oscillators. The tubular frames 12 and 12' supporting thestationary electrodes 4 and 5 consisting of hollow tubing, may beadvantageously employed both for the purpose of su plying'a coolingmedium for the lower stationary metal electrodes, and also for thepurpose of forming an electrical conductor to same, connection beingsecured by simply attaching one terminal to the screw, as indicated at21, Fig. 1.. I have also shown the front portions of the main supportlngframes C and C as being provided with hinged sections 22, provided .forthe purpose of securing the rods 8 and 9 in their guide pockets. Thesemay be. swung about the r hinges 23 into the dotted line position,indicated at 24, to permit the removal of the carbon sup orting rodsSand 9 at any time without sturbing the remainder of the apparatus.

are such-as experience and manufacturer may dictate.

{igHaving thus-described my invention, what I claimanddesire to ent is:c

.1. The combination in a high "frequency oscillator, of a plurality ofstationarymlecjudgment of the secure by Letters Pattrodes, af'plura-lityof "electrodes mounted.

to ,move in relation tothe; stationaryefem trodes, rods" toewhioh themovableelectrodes are securedi=supporting frames in 'whichthe rods ares'lidably'molrutedglifting frames slidablymounted1within said frames,clutch; ing magnetsadapted to engage the -.rods

mounted said lifting frames, armature plates "secured to thelifting-frames,d;ifting' magnets mounted, with relation to ;saidarmature plates, means for energizing the several magnetgiimunison,andsmeans for-tad.-

with the supporting frames.

justing the position of "the lifting magnets stationary electrode, meansto grip the movable electrode, to raise the gripping" means, andmeanswhich when moved to one position simultaneously renders thegripping means operative and raises the same to thereby separate theelectrodes and to ain-" tain same stationary, regardless of the space:-

between the electrodes and which in another position releases the;gripping and raising means,to enable the movable electrode toinstantaneously contact with the stationary electrode to thusallowaptomatic readjustment of the predetermined space; between.

the electrodes upon shortening of the mov- "able" electrode.

any position of the latter when rendered 1 operative and to maintainsame stationary regardless of the space between the electrodes and whenreleased to allow the movable electrode to instantaneously engage the Iother electrode to thus'allow automatic read justment .of thepredetermined space between the electrodes upon shortening of one ofsame. I

4;. In an oscillator having a movable and a -,stationary electrode,energizable means of the space beoperating independently;d d to u e m ac1rcu1 tween the electrodes inc engage and raise themovable electrodeatany position of the latter whereby upon opening of the circuit saidmeans releases the movable electrode and allows same to instantaneouslyengage the stationary elecl gage with the stationary e ectrode.

trode and upon closing-of the circuit again engages and lifts themovable electrode whereby the predetermined extent ofsepa aration of theelectrodes may be automatically maintained by mere manual opening andclosing of the circuit at will.

5.. In an oscillator having a movable and a stationary-electrode, meansoperating-independently of the space between the elec- 6. Inan"oscillator having a movable and a stationary electrode, a maln framehaving means toguide the movements of the movable electrode,asupplemental frame slidable in the main frame, a magnet borne by thesupplemental frame to attract and hold the movable electrode, a magnetadjustably carplemental frame, said magnets bein plemental frame rie'dby the main frame to attract the sup electrically connected whereby uponclosnlg to:

the circuit the movable electrode wi Q gipped and raised with thesupplemental e, and upon opensizg of the circuit the electrode will bere ea and with the supgravitate to lowermost positions. I

' 7; combination with a pluralit of'sta- J "tionary and movableelectrodes, se ectively operated automatic means for gripping andreleasing the movable electrodes in any pos1- of the gripping means. 7

1- 8. In combination with an oscillator havving a' movabIe -and astationary electrode,

Ppingmeans to thereb able elec tion of the latter, means for lifting theraise the movtrodes," and means or independentl regulating the extent ofmovement 'of eac I means operating independently of the space betweenthe electrodes for lifting}, the movable electrode byengagement-therewith at any point on the electrode which alines withsaid lifting means to sustain the movable electrode stationary, andmeans operable at will whereby when the electrode shortens same 'may beallowed to moveinto engagement with the stationary electrodeand besubsequently again and automatically en- ,gaged with the lifting means.9. In combination with the stationary and.

movable electrodes of an oscillator, energizable means operatingindependently of the space between the electrodes to engage the Imovable electrode to enable raising of the I latter and to sustains'amesta-tionary and which upon deenergization thereof releases themovable electrode to allow the latter to move in to engage with thestationary electrode, and manually controlled means to efi'ect raisingand lowering of the timer-- gizable means and to control energizing anddeenergizing of the energizable means at Wlll. v

10. In cbmbination with the stationary and movable electrodes of aplurality of oscillators, means to automatically grip the movableelectrodes to enable raising thereof, means to enable release of saidgri ping means at will andzreenga ement at a 'fi'erent point on theelectr' e,. means to raise the gripping means, and means to enableindependent adjustment of the extent of" movement 0 each of the grippingmeans.-

In testimony whereof'I have hereunto set myrhand in the presence of twosubscribing witnesses. I g I lg ALFRED H. COHEN. 'Withesses JOHN H.Hnnmne, RIQHARDS.

